作业帮incompatible types when assigning to type 'CHANGE' from type 'struct CHANGE *'typedef struct change{char str1[21];char str2[21];}CHANGE;CHANGE *p=NULL;p=(CHANGE*)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/p[0]=(CHANGE*)calloc(M,sizeof(CHANGE));
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 00:45:26
![incompatible types when assigning to type 'CHANGE' from type 'struct CHANGE *'typedef struct change{char str1[21];char str2[21];}CHANGE;CHANGE *p=NULL;p=(CHANGE*)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/p[0]=(CHANGE*)calloc(M,sizeof(CHANGE));](/uploads/image/z/13539550-22-0.jpg?t=incompatible+types+when+assigning+to+type+%27CHANGE%27+from+type+%27struct+CHANGE+%2A%27typedef+struct+change%7Bchar+str1%5B21%5D%3Bchar+str2%5B21%5D%3B%7DCHANGE%3BCHANGE+%2Ap%3DNULL%3Bp%3D%28CHANGE%2A%29calloc%283%2Csizeof%28CHANGE%2A%29%29%3B+%2F%2A%E7%94%B3%E8%AF%B7%E6%8C%87%E9%92%88%E6%95%B0%E7%BB%84%2A%2Fp%5B0%5D%3D%28CHANGE%2A%29calloc%28M%2Csizeof%28CHANGE%29%29%3B)
incompatible types when assigning to type 'CHANGE' from type 'struct CHANGE *'typedef struct change{char str1[21];char str2[21];}CHANGE;CHANGE *p=NULL;p=(CHANGE*)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/p[0]=(CHANGE*)calloc(M,sizeof(CHANGE));
incompatible types when assigning to type 'CHANGE' from type 'struct CHANGE *'
typedef struct change
{
char str1[21];
char str2[21];
}CHANGE;
CHANGE *p=NULL;
p=(CHANGE*)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/
p[0]=(CHANGE*)calloc(M,sizeof(CHANGE)); /把申请的地址存到指针数组里*/
大概就是这些...为什么会出错呢?
incompatible types when assigning to type 'CHANGE' from type 'struct CHANGE *'typedef struct change{char str1[21];char str2[21];}CHANGE;CHANGE *p=NULL;p=(CHANGE*)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/p[0]=(CHANGE*)calloc(M,sizeof(CHANGE));
前两句改一下：
CHANGE **p=NULL;
p=(CHANGE**)calloc(3,sizeof(CHANGE*)); /*申请指针数组*/